# Every chord, every key

Interactive version: [`chord-dictionary.html`](chord-dictionary.html). Part of **Other keys**, after [Other chord types](chord-types.md). Next: [Modes](modes.md).

You know the name. This page spells it. Every recipe from [Other chord types](chord-types.md), written in
all twelve keys: one chord per row, notes in columns from the lowest, and a **mini-keyboard** of the
keys to press. On the interactive page, click any row to hear it (with an optional
**roll/arpeggiate** toggle), or filter the table to a single key. Spellings use sharps, the same as
those tables. This page is a reference. You do not need to remember all of these, and you are not
expected to.

How a recipe is built — its degrees, and why it feels the way it does — is on
[Other chord types](chord-types.md). The seven chords that belong to one key are on
[Diatonic chords](chord-cheatsheet.md). This page is the lookup.

## What's in it

For each of the 12 roots (C, C♯, D, … B), the page lists every chord type from
[Other chord types](chord-types.md):

- **Triads** — major, minor, diminished, augmented
- **Suspended & power** — sus2, sus4, 5
- **Sixths** — 6, m6
- **Sevenths** — maj7, 7, m7, m7♭5, °7, mMaj7, 7♯5
- **Extended** — 9, maj9, m9, 11, 13
- **Added-tone** — add9, 6/9, m(add9)
- **Altered dominants** — 7♭9, 7♯9, 7♯11, 7♭13

To spell any chord in any key by hand, take its **On C** notes from the
[other chord types](chord-types.md) tables and transpose every note up by the same number of half-steps as
the new root (e.g. Dm7 = Cm7 up two half-steps — D F A C).

## Grid view (chords × keys)

At the bottom of the interactive page there's a second layout of the same data: **chord types down the
rows, all twelve keys across the columns**, with each cell holding that chord's notes spelled correctly
for its key (so E13 reads E G♯ D F♯ C♯, not E A♭ D F♯ D♭). Click any cell to hear the chord in that key.
It's a dense sideways-scrolling lookup grid — handy for comparing one chord across every key at a glance.